Valentin Lopez is the Chairman of the Amah Mutsun Tribal Band, one of three historic tribes that are recognized as Ohlone. The Amah Mutsun are comprised of the indigenous descendants forcibly taken to Missions San Juan Bautista and Santa Cruz. Chairman Lopez is also the President of the Amah Mutsun Land Trust which was established in 2012. He is a Native American Advisor to the University of California, Office of the President on issues related to repatriation. He is also a Native American Adviser to the National Alliance on Mental Illness (NAMI) and the Phoebe Hearst Museum of Anthropology. The Amah Mutsun are currently working to restore their traditional indigenous knowledge regarding land stewardship so they can return to the path of their ancestors. Consequently, the Amah Mutsun are very active in conservation and protection efforts within their traditional tribal territory. Chairman Lopez is working to restore the Mutsun Language and is a traditional Mutsun singer and dancer.